Electric range.



E. G. VAN WIE & R W. DAVENPORT.

LECTRIG RANGE..

APPLICATION-FILED NOV. 25 1912.

Patented Aug 3, 1915.

2 SHEETS-SHET I.

E. G. VAN WIE & R.W. DAVENPORT.

ELECTRIC RANGE. APP LICATION ILED nov.2s. 1912.

P atented Aug. 3, 1915.

i W M M Z nmzran STATES mrnnr orrror.

EDWIN Gr. VAN WIE ANI) RANSO1VJI W. DAVENPORI, OF DEIR OIT, MICHIGAIN', ASSGNOS T0 DETROIT S'I'OVE WORKS, O'.E DETROIT, 1VIICIIIGAN, A COILPORATION OF 1VIICIIIGAN.

ELECTRIC RANGE.

Specification of Letters Patent.

Patented Ag. 3, 1915.

Application fi1ed November 25, 1912. Seria1No. 733,510.

T0 all whom it may concern Be it known that we, EDWIN ajnd RANSOM W. DAVENPORT, citizens of the nited States of America, residing at Detrot, in the county of Wayne and State of Michigan, have invented certain new and the var1ous heaters, wh1ch are mounted upon use f l Improven ents in Electric Ranges, of Whi ih the following is a speoification, refer ence being had therein to the accompanying dawings.

'1lie invention relates to electrical heaters and has for one of its objects theIJobtaining of a construction smilar in its organization to the ordinary gas range.

It is a further object to simplify the con struction nd to render the various heating units rea ily detachable and exchangeable to facilitate repair.

Still further it is an object to utilize a metallic frame and to a large extent metallic garts, while at the same time conserving the eat developed in the units and avoiding waste by conduction or radiation.

With these objects in view the invention consists in the construction as hereinafter set forth.

In the drawings: Figure 1 is a perspective view of the range. Fig. 2 is a diagram showing the arrangement of the electrical circuits. Fig. 3 is a longitudinal section 'through one of the units. Fig. 4 is a detached perspective view of one of the oven units. Fig. 5 is a sectional perspective view of the switch showing the arrangement of clamping contacts. I

In the present state of the art, electrical cooking stoves are usually constructed along radically difierent lines from gas ranges, and the relative disposition of the ovens, top, heaters, ete., is also different. As a consequence the substitution of an electric stove for a gas range requires a certain amount of specialtraining of the user. l/Vith our improved construction the lines of the range andthe disposition of the oven and surface heaters is substantially the same as with a gas range. Thus a common form of c0n structior1 in a gas range is to provide an open top or hot plate, having a plurality of b1irners, and to arrange the baking oven and broiler in superposed relation at one side of said hot plate, this arrangementbeing followed in our improved construction.

In detail, A'is a metallic frame similar to G. VAN WIE constructions ordinarily employed in gas ranges.

B is the broiling oven, and C the baking the frame, preferably adjacent to the front ra1l of the open top. These switches control not only the units which are employed in connection with the open top or hot plate, hut also the several units arranged in the broiling and baking o"ens, and the construction is also such that the heat rnay be varied by diflerent positions of adjustment of each switch. T0 permit exchanging the units they are detachably mounted in their various positions and the construction is such that the placing or the I'GHIOVI1 of the unit Will automatically make or break the electrical eonnections thereto. T0 further facilitate the operation of exchange, the units are so constructed that they may be inserted or removed without the use of tools, in substantially the samemanner as the detachable burners of a gas range.

In detail, F are the heating elements of the open top or hot plate, and are preferably of disk form, and are mounted upon a supporting frame Gr which has a laterally extending arm H. The electrical conductors for the heating elements extend along the arm H and at the outer end of the latter are connected to terminal contacts I having an insulating mounting upon said arm. Directly beneath the disk the frame G is sup ported upon a cross-red J through themedium of a notched yoke K, while the outer end of the arm H is mechanically suppoirted hy the insertion of the terminal contac'tsI into a socket connector on the frame. 'lhus the engagement is such that one familiar with the care of a gas range and accustomed to removing the gas. burners for cleaning, aan readily attach or detach the heating units.

The terminal socket with which the contacts 1 of each unit are engaged is preferablyan integral part of the switch block 1l Which controle the current. T0 this end said switch is provided with an insulator I contacts The block is also Preferably provided with fuse sockcts M for detachably inclosed fuses M, so that the circuit for each separate unit is protected by its own fuse. The blocks E for the vrious switches are placed adjacent to each other and all are connected t0 common service conductors N, which pass thrugh grooves inthe blocks and are coupled by clamps 0. The blocks E are preferably mechanically supported by having a grooved engagement with a rod P extending parallel with the side rail of the frame and iiillhd thereto by a suitable bracket P. At the side of the frame a fuse block or out-out Q for all of the circuits may be arranged, and may be connected to the conductors N and to conductors R passing through a suitable conduit R to the source of supply. 'lhe disks F are arranged around at different points within the frame and are preferably surrounded by top plates S, which are marginally supported upon the frame and are apertured for the several disks. These top plates inclose and protect the portions of the units below the top, and, being preferably on the same level as the disks F and frame, produce a flat closed ton.

The oven heating units are preferably formed as shown in F ig. 4, and consist of supporting rods T, which are inserted through apertures in the side wall of the oven and which carry the electrical resistor T. The rods T, which are preferably formed of insulating material 01 material having an insulating coating, are mechanically supported by blocks or heads T at one end thereof engaging recesses in the side wall of the oven. Electrical connection is made by the insertion of the units through contact members U on the heads T which engage socket contacts in blocks U. The latter are arranged in the recess U along theside of the oven, and the several blocks are connected with the conductors leading to the controlling switch. In order that varying temperatures may be obtained, we preferably use a three-wire system for connecting the blocks U, so that the resistors T of the several units are alternatively connected between two of said wires and the third wire. As shown in the diagram, three units are-employed in the upper units between the conductors V and V are in circuit; 1n another position the units between the conductors V and V are 1I1 c1rrange in y ariation ofthe temperature.

Thoetail construction of the heating units, contr0lling blocks and the ovens form subject matter for other applications and are not a part of the present application.

In operation the switches E, being arrangcd in substantially the same relation as the valves of a gas stove, the operator may conveniently control any of the units for the open top or for the o"en. T he temperature may be varied by the turning of the switches to different points so that either K from the supporting bar J, after which the contacts I may be. withdrawn from their sockets, thereby breaking the electricaloon-' nection and freeing the unit. In like manner a new unit may be quickly inserted without any special skill on the part of the operator or any knowledge of electrical science. When in use, there are no live wires or contacts which are exposed, which eliminates the possibility of receiving a shock or forming a short circuit.

\Vhat we claim as our invention is:

1. An electrical cooking range comprisin a frame having an exposed top section an an oven at one side thereof and above the same, independent electricalheating units for said exposed top and oven, and a series tion arranged at one side thereof and extending thereabove, switch blocks provided with switches arranged a1on the front rail of the open. top section e ectrically connected to certain of said switches, electrical heating units for said open top section, a cross bar carried by the frame and extending across the said open top section for supporting the heating units, electrical heating units forsaid oven laterally insertible thereinto from theside adjacent the open top, electrical connections for said units, and controlling switches for the said units.

3. An electrical cooking range, the combnation of an open top section, an oven section arranged at one side thereof and ex tending thereabove, switch blocks provided with switch'es detachably engaging the front rail of the open top section, electrical heat-- ing units in said to section electrioally connected to certain oi said switches, electrial heating units for said oven sections laterally insertible thereinto through the side adjucent to said open top section, apertured terminal blocks through which said units are insertible, located in a groeve in the said twecn said terminal blecks and their centrelling switches, and a cover fer the channel in the oven sid, concealing said terminal bleeks, and heating blecks eennected therewith.

4. In an electrical ceeking range the cembinatien efan open tep sectien, an even sectien arranged at ene side thereof, eleetrical centrelling switches arranged aleng the front rail of said epen top sectien, electrieal heating units in said epen tep seetion, electrieally eonnected te certain of said switches, electrical heating units fer said even laterally insertible thereinte from the side adjacent te said epen top, and electrical connectiens heused within one of the rails of said epen tep seetien and extending te the oven seetien wl1ereley ti1ey may be detachably engaged.

An electrical ceokingrange comprising an epen tep seetien, an men sectien arranged adjacent te ene side of said epen top secten and extending thereabeve, electrical switehes arranged aleng the front rail of said open tep sectien, electrieal heating units for said open top sectien cennected te certain of said switches, electrieal heating units fer said oven. seetien laterally insertible thereinto tl1rei1gh the side adjacent te said open tep seetion, apertured terminal bleeks, threugh which said units are insertible leeatcd in a groeve in said side of the even, eleetrieal cenducters between said terminal blecks and their contrelling switehes, and a remevable cever for the ehannel in the oven side coneealing,- said terminal elecl s and heating units cennected therewith.

(3. A.n electrieal ceeking range cemprising: en open top sectien, an even seetien adjacent te ene side of said open tep section and co1itaining superpesed even chambers with pertiens of beth chambers extending above the level of said epen top, electrieal heating units fer the upper and lewer even chambers laterally insertible through apertures in the side wall adjacent te said open top, apertured terminal bleeks through which said hraters are insertible ecae n reere 1 sa e 1 t d i 5; n 1l n s1de, een

ductors eonnecting threupgh said terminal bleeks and extending longitudinally of said groeves, oever lates for sad ehannels re mevable fer the insertionox. withdrawal of saitl units, electrieal s\\itehes arranged aleng the front of said epen tep sectien, and eleetrieal eonnectiens ,between certai n of said switehes and said eenducters in said channels.

7. An eleetrical ceking range cemprising an annula r frame, a plurality of electrical lieating units arranged within said frame and having thcir heating surfaees substantially in the plane of the top of said frame, lateral arms on said units extemling te the front of said frame, centrolling-switch blecks meunted en the front rail of said frame, and coperating terminal centacts en said blecks and lateral arms of said heating units for electrically and meehanically cennecting the same.

8. An electrieal cooking range cemprising an epen frame, disk heating units arranged within said frame, reds extending aeress said frame upon whieh said units are suppertcd, lateral arms upen said units extending te the front of said frame, centrelling-switch blecks meunted en the front of said frame, and laterally engageable contacts upen said switch blecks and lateral arms fer electrically and mechanically een necting said units te said switch bleek.

9. In an electrical ceeking range, an epen frame, a disk unit within said frame having its upper face in the plane of the top of the frame, a lateral arm en said unit extencling te the front of said frame, a centrelling switch bleek meunted at the front of said frame, laterallyengageable eoeperating contact members en said lateral arm and switch bleek fer eleetrically and mechanically cenneeting said disk unit te said bleek, a cross-red beneath said disk fer directly supporting the same, and a cover plate er panel fitting within said frame and apertured te recei"e said disk heatirrg unit.

10. In an eleetrical ceoking range, an epen frame, electrcal eentrelling switch bleeks arranged aleng the front of said frame, parallel guides at the front of said frame with which said blecks slidably engage, eenducters extending parallel te said guides, clamping terminals en said blecks fer cennecting the same te said cenducters, disk heating units within said frame, reus upon which said units are supperted, lateral arms extending fr0m said units te the respeetim switch blecks, and ceperating contact members en said switch blecks and lateral arms fer mechanically and electrically eennecting the same.

11. An electrical ceeking range including an epen frame, a cover plate at the top of the frame previded with epenings, a plurality of disk heating units arranged in said openings, a red extending aeress said frame at the rear thereef te support the heating units, each of said heating units having at its under side a yeke engaging the said red and a supperting arm extending te the front of said frame, eentrel ing switch blecks extending aleng the upper front rail of said frame, and mearis fr detachably connecting the front end per tiens of said arms with the switch blecks.

12. An eleetrcal ceeking range ineluding a substantially rectangular frame, en even secured te the frame and incldingsuperposed heatilg chambers, the"frflme being disposed at the base of the 1ower chamber,

a p hna'ty of switch blocks, the arms beng insertible through the frame whereby they may be connected t0 the switch blocks.

In testimony whereof we affix om sgna- 1:

tures in presence of two witnesses.

EDWIN G. VAN WIE. RANSOM W. DAVENPORT.

Witnesses:

ADELAIDE I. ADAMS, JAMES P. BARRY. 

